gcc/testsuite/gcc.target/arm/fixed_float_conversion.c

   1 /* Check that vcvt is used for fixed and float data conversions.  */
   2 /* { dg-do compile } */
   3 /* { dg-require-effective-target arm_vfp3_ok } */
   4 /* { dg-options "-O1" } */
   5 /* { dg-add-options arm_vfp3 } */
   6 /* { dg-skip-if "need fp instructions" { *-*-* } { "-mfloat-abi=soft" } { "" } } */
   7
   8 float
   9 fixed_to_float (int i)
  10 {
  11   return ((float) i / (1 << 16));
  12 }
  13
  14 int
  15 float_to_fixed (float f)
  16 {
  17   return ((int) (f * (1 << 16)));
  18 }
  19
  20 /* { dg-final { scan-assembler "vcvt.f32.s32" } } */
  21 /* { dg-final { scan-assembler "vcvt.s32.f32" } } */